Photosensitive Drum Support With Nested LED Arrays
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Solution Overview
Problem
In image forming apparatuses, the movement of photosensitive drums and LED heads outside the apparatus body poses a risk of interference with other members or accidental user contact with the LED exposing surface, affecting printing quality.
Innovation Solution
The apparatus includes a photosensitive-drum supporting member with side walls that can move between stowed and moved positions, accommodating LED arrays between exposing and retracted positions, ensuring they do not protrude and are protected from interference or user contact by tension coil springs and guide mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the photosensitive drums and LED heads are moved outside the apparatus body, then the ease of operation is improved, but the reliability deteriorates due to interference with other members or user contact
Solution Approach 1:
The LED array is nested within the photosensitive-drum supporting member structure. The supporting member acts as a container that holds the LED array, ensuring it remains enclosed during movement between stowed and moved positions. This nesting prevents the LED array from interfering with other members or being contacted by users while maintaining operational accessibility.
2Ease of operation
If the LED arrays are exposed during movement, then the ease of operation is improved, but harmful factors increase due to user contact or interference
Solution Approach 1:
The LED array is nested within the photosensitive-drum supporting member, which encloses it during movement. This nested configuration ensures the LED array remains protected from user contact and interference with other apparatus members while still allowing operational access when needed.
Solution Approach 2:
The photosensitive-drum supporting member with side walls acts as a protective enclosure structure. The side walls form a shell-like barrier that contains the LED array during movement, preventing harmful contact while maintaining the functional accessibility of the exposing members.
3Reliability
If the LED arrays are accommodated within the supporting member at all positions, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The LED array is nested within the photosensitive-drum supporting member structure. This integration allows the LED array to be accommodated within the supporting member at all positions (both stowed and moved positions) without requiring separate protective mechanisms, thereby improving reliability while limiting the increase in device complexity to the essential nested structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration prevents interference and accidental contact with the LED arrays, enhancing operational safety and simplifying the structure by accommodating LED arrays within the supporting member at all positions, thus improving the apparatus's reliability and usability.
Implementation Method 1
the plurality of exposing members is accommodated within the photosensitive-drum supporting member both at the exposing position and at the retracted position
Data Source
AI summary
A photosensitive-drum supporting member has a pair of side walls confronting both ends of each photosensitive drum. The photosensitive-drum supporting member supports the photosensitive drums between the side walls. The photosensitive-drum supporting member moves between: a stowed position at which the photosensitive-drum supporting member is stowed within an apparatus main body; and a moved position at which the photosensitive-drum supporting member is moved from the stowed position to outside the apparatus main body through an opening. Exposing members are provided at the photosensitive-drum supporting member such that the exposing members move between: an exposing position at which each exposing member is adjacent to a corresponding photosensitive drum; and a retracted position at which each exposing member is separated from the corresponding photosensitive drum and is engaged by an engaging part. The exposing members are accommodated within the photosensitive-drum supporting member both at the exposing position and at the retracted position.